“…Then, an algebraic form for (10a) and (10b) is obtained, v(t + 1) = Fv(t), w(t + 1) = Gv(t)w(t), where F = 𝛿 8 [3,7,8,8,1,5,6,6], G = 𝛿 8 [5, 1, 6, 2, 7, 3, 8, 4, … ] ∈ 8×64 , the detailed information for matrix G is omitted here. Then, we get 64 and 𝛿 62 64 of (11) before and after {1, 2}-perturbation 𝜉(t + 1) = L𝜉(t), (11) where L = 𝛿 64 [21, 17, 22, 18, 23, 19, 24, 20,…”